thodg/libgit2/tests/index/cache.c

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• Hash : 795d8e93
  Author :
  Date : 2014-09-29T08:03:22
  

  index: make sure to write cached subtrees if parent is invalidated If e.g. the root tree is invalidated, we still want to write out its children, since those may still have valid cache entries.

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• tests/index/cache.c

• #include "clar_libgit2.h"
  #include "git2.h"
  #include "index.h"
  #include "tree-cache.h"
  
  static git_repository *g_repo;
  
  void test_index_cache__initialize(void)
  {
  	g_repo = cl_git_sandbox_init("testrepo");
  }
  
  void test_index_cache__cleanup(void)
  {
  	cl_git_sandbox_cleanup();
  	g_repo = NULL;
  }
  
  void test_index_cache__write_extension_at_root(void)
  {
  	git_index *index;
  	git_tree *tree;
  	git_oid id;
  	const char *tree_id_str = "45dd856fdd4d89b884c340ba0e047752d9b085d6";
  	const char *index_file = "index-tree";
  
  	cl_git_pass(git_index_open(&index, index_file));
  	cl_assert(index->tree == NULL);
  	cl_git_pass(git_oid_fromstr(&id, tree_id_str));
  	cl_git_pass(git_tree_lookup(&tree, g_repo, &id));
  	cl_git_pass(git_index_read_tree(index, tree));
  	git_tree_free(tree);
  
  	cl_assert(index->tree);
  	cl_git_pass(git_index_write(index));
  	git_index_free(index);
  
  	cl_git_pass(git_index_open(&index, index_file));
  	cl_assert(index->tree);
  
  	cl_assert_equal_i(0, index->tree->entry_count);
  	cl_assert_equal_i(0, index->tree->children_count);
  
  	cl_assert(git_oid_equal(&id, &index->tree->oid));
  
  	cl_git_pass(p_unlink(index_file));
  	git_index_free(index);
  }
  
  void test_index_cache__write_extension_invalidated_root(void)
  {
  	git_index *index;
  	git_tree *tree;
  	git_oid id;
  	const char *tree_id_str = "45dd856fdd4d89b884c340ba0e047752d9b085d6";
  	const char *index_file = "index-tree-invalidated";
  	git_index_entry entry;
  
  	cl_git_pass(git_index_open(&index, index_file));
  	cl_assert(index->tree == NULL);
  	cl_git_pass(git_oid_fromstr(&id, tree_id_str));
  	cl_git_pass(git_tree_lookup(&tree, g_repo, &id));
  	cl_git_pass(git_index_read_tree(index, tree));
  	git_tree_free(tree);
  
  	cl_assert(index->tree);
  
  	memset(&entry, 0x0, sizeof(git_index_entry));
  	git_oid_cpy(&entry.id, &git_index_get_byindex(index, 0)->id);
  	entry.mode = GIT_FILEMODE_BLOB;
  	entry.path = "some-new-file.txt";
  
  	cl_git_pass(git_index_add(index, &entry));
  
  	cl_assert_equal_i(-1, index->tree->entry_count);
  
  	cl_git_pass(git_index_write(index));
  	git_index_free(index);
  
  	cl_git_pass(git_index_open(&index, index_file));
  	cl_assert(index->tree);
  
  	cl_assert_equal_i(-1, index->tree->entry_count);
  	cl_assert_equal_i(0, index->tree->children_count);
  
  	cl_assert(git_oid_cmp(&id, &index->tree->oid));
  
  	cl_git_pass(p_unlink(index_file));
  	git_index_free(index);
  }
  
  void test_index_cache__read_tree_no_children(void)
  {
  	git_index *index;
  	git_index_entry entry;
  	git_tree *tree;
  	git_oid id;
  
  	cl_git_pass(git_index_new(&index));
  	cl_assert(index->tree == NULL);
  	cl_git_pass(git_oid_fromstr(&id, "45dd856fdd4d89b884c340ba0e047752d9b085d6"));
  	cl_git_pass(git_tree_lookup(&tree, g_repo, &id));
  	cl_git_pass(git_index_read_tree(index, tree));
  	git_tree_free(tree);
  
  	cl_assert(index->tree);
  	cl_assert(git_oid_equal(&id, &index->tree->oid));
  	cl_assert_equal_i(0, index->tree->children_count);
  	cl_assert_equal_i(0, index->tree->entry_count); /* 0 is a placeholder here */
  
  	memset(&entry, 0x0, sizeof(git_index_entry));
  	entry.path = "new.txt";
  	entry.mode = GIT_FILEMODE_BLOB;
  	git_oid_fromstr(&entry.id, "45b983be36b73c0788dc9cbcb76cbb80fc7bb057");
  
  	cl_git_pass(git_index_add(index, &entry));
  	cl_assert_equal_i(-1, index->tree->entry_count);
  
  	git_index_free(index);
  }
  
  void test_index_cache__two_levels(void)
  {
  	git_tree *tree;
  	git_oid tree_id;
  	git_index *index;
  	git_index_entry entry;
  	const git_tree_cache *tree_cache;
  
  	cl_git_pass(git_repository_index(&index, g_repo));
  	cl_git_pass(git_index_clear(index));
  
  	memset(&entry, 0x0, sizeof(entry));
  	entry.mode = GIT_FILEMODE_BLOB;
  	cl_git_pass(git_oid_fromstr(&entry.id, "a8233120f6ad708f843d861ce2b7228ec4e3dec6"));
  	entry.path = "top-level.txt";
  	cl_git_pass(git_index_add(index, &entry));
  
  	entry.path = "subdir/file.txt";
  	cl_git_pass(git_index_add(index, &entry));
  
  	/* the read-tree fills the tree cache */
  	cl_git_pass(git_index_write_tree(&tree_id, index));
  	cl_git_pass(git_tree_lookup(&tree, g_repo, &tree_id));
  	cl_git_pass(git_index_read_tree(index, tree));
  	git_tree_free(tree);
  	cl_git_pass(git_index_write(index));
  
  	/* we now must have cache entries for "" and "subdir" */
  	cl_assert(index->tree);
  	cl_assert(git_tree_cache_get(index->tree, "subdir"));
  
  	cl_git_pass(git_index_read(index, true));
  	/* we must still have cache entries for "" and "subdir", since we wrote it out */
  	cl_assert(index->tree);
  	cl_assert(git_tree_cache_get(index->tree, "subdir"));
  
  	entry.path = "top-level.txt";
  	cl_git_pass(git_oid_fromstr(&entry.id, "3697d64be941a53d4ae8f6a271e4e3fa56b022cc"));
  	cl_git_pass(git_index_add(index, &entry));
  
  	/* writ out the index after we invalidate the root */
  	cl_git_pass(git_index_write(index));
  	cl_git_pass(git_index_read(index, true));
  
  	/* the cache for the subtree must still be valid, even if the root isn't */
  	cl_assert(index->tree);
  	cl_assert_equal_i(-1, index->tree->entry_count);
  	cl_assert_equal_i(1, index->tree->children_count);
  	tree_cache = git_tree_cache_get(index->tree, "subdir");
  	cl_assert(tree_cache);
  	cl_assert_equal_i(0, tree_cache->entry_count);
  }
  
  void test_index_cache__read_tree_children(void)
  {
  	git_index *index;
  	git_index_entry entry;
  	git_tree *tree;
  	const git_tree_cache *cache;
  	git_oid tree_id;
  
  	cl_git_pass(git_repository_index(&index, g_repo));
  	cl_git_pass(git_index_clear(index));
  	cl_assert(index->tree == NULL);
  
  
  	/* add a bunch of entries at different levels */
  	memset(&entry, 0x0, sizeof(git_index_entry));
  	entry.path = "top-level";
  	entry.mode = GIT_FILEMODE_BLOB;
  	git_oid_fromstr(&entry.id, "45b983be36b73c0788dc9cbcb76cbb80fc7bb057");
  	cl_git_pass(git_index_add(index, &entry));
  
  
  	entry.path = "subdir/some-file";
  	cl_git_pass(git_index_add(index, &entry));
  
  	entry.path = "subdir/even-deeper/some-file";
  	cl_git_pass(git_index_add(index, &entry));
  
  	entry.path = "subdir2/some-file";
  	cl_git_pass(git_index_add(index, &entry));
  
  	cl_git_pass(git_index_write_tree(&tree_id, index));
  	cl_git_pass(git_index_clear(index));
  	cl_assert(index->tree == NULL);
  
  	cl_git_pass(git_tree_lookup(&tree, g_repo, &tree_id));
  	cl_git_pass(git_index_read_tree(index, tree));
  	git_tree_free(tree);
  
  	cl_assert(index->tree);
  	cl_assert_equal_i(2, index->tree->children_count);
  
  	/* override with a slightly different id, also dummy */
  	entry.path = "subdir/some-file";
  	git_oid_fromstr(&entry.id, "45b983be36b73c0788dc9cbcb76cbb80fc7bb058");
  	cl_git_pass(git_index_add(index, &entry));
  
  	cl_assert_equal_i(-1, index->tree->entry_count);
  
  	cache = git_tree_cache_get(index->tree, "subdir");
  	cl_assert(cache);
  	cl_assert_equal_i(-1, cache->entry_count);
  
  	cache = git_tree_cache_get(index->tree, "subdir/even-deeper");
  	cl_assert(cache);
  	cl_assert_equal_i(0, cache->entry_count);
  
  	cache = git_tree_cache_get(index->tree, "subdir2");
  	cl_assert(cache);
  	cl_assert_equal_i(0, cache->entry_count);
  
  	git_index_free(index);
  }
  

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